Fabrication of silver hollow microspheres by sodium hydroxide in glycerol solution

► Silver hollow microspheres carried out by the reduction of silver sulfate with the mixture solution of glycerol and sodium hydroxide. ► Thickness of approximately 0.10-0.53 μm on the surface of silver sulfate depending on the reduction temperature and holding time. ► The morphology of the microspheres is of coral-like shape, containing large porosity.